When we set out to make the perfect douche, we started with silicone; we knew that every part, from the nozzle to the reservoir had to be the most body-safe material in toys. So rest assured, Good Clean Fun is 100% soft, silky silicone, from top to bottom.We knew it was essential that we have a fool-proof back-flow restrictor to avoid recycling unclean waterso we developed an exceptional one, and patented it. And to avoid repeated cleaning, we rejected the common 8 and 9 fluid-ounce reservoirs, for a massive 13 ounces, for a thorough cleansing, one and done. And to make sure you were four times as clean, we rejected the common single-hole nozzle for a four-hole multi-directional stream. And then we made it amazingly affordable, so you can have a proper clean without cleaning out your wallet.Now thats Good Clean Fun!Patented Backflow Protecter100% Silicone Nozzle100% Silicone ReservoirHuge 13 oz. Water CapacitySoft, Silky Matte FeelComfortable Flex-SiliconeTight-Seal Screw Nozzle